Article polishing or grinding machine.



.F. H. MOONEY.

ART|'CLE POUSHING OR GRINDING MACHINE. APPLICATION FILE D MA Y7,1917.

7 Patented May 28,1918. 5

3 SHEETSS HEET 1- I I F. H. MO0NE Y.. ARTICLE POLISHING ORIGRINDING MACHINE.

' APPLICATION FILEQ MAY I. !9H 1,267,574.. Patented May 28,1918;

" 3 SHEETS-SHEET 2- mmmmimu J INT/ENTER Y M f .7 flaw MW F. H. MOONEY.

ARTICLE POL ISHING OR GRINDING MACHINE.

APPLICATION FILED MAYY. 1917.

1 26?,574. I Patented May 28,1918

3 SHE ETSSHEET 3.

INVENTUE' 'tains to make and drawings, in whicli FRANK a. MOONEY, or TOLEDO,

OHIO, ASSIGNC'R TO THE CONKLIN ran MANUFAc v TUBING COMPANY, OF TOLEDO, OH'LO, A CORPORATION OF OHIO.

. Application filed May 7, 1917.

To all 'wZwm'it ma concern:

Be it lmown that I,..FRAN-K H. MOONEY, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of. Ohio, have invented a certain new and useful Article Polishing or Grinding Machine and I do hereby declare'the follow ing'to' be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it apperuse the same, reference being had to-the accompanying drawings, and to the characters of reference marked thereon,'which form tion. v

This invention relates to grinding, polishing andbufing machines, and particularly to a machine adapted for the polishing or butiingof small articles, such for instance, as fountain pen caps, barrels, etc.- g

The object of my invention is the provision of a simple and improved machine of the character described, which is automatisuccessively take work pieces from a magazine,-polisli and then'deliver them from the machine, whereby the polishing of articles of the character described is accomplishedin an efficient and rapid manner. i

The invention is fully described in the following specification, and while, in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated in the accompanying Figure l is a top plan view of'a machine embodying my invention. Fig.2 is a side elevation of the abrasive applying means for-one of the bufiing wheels. Fig. 3 is a side elevation of a portion of said'means. Fig. 4 is a section on the line 4 4 in Fig. 1. Fig. 5 is a. section on the line 55 vin Fig. 1. Fig. 6 is a bottom plan view of a portion of the frame base or table together .with the mechanism mounted thereunder. v

Fig. 7 isa section on the line 7'7.in Fig. 1, and Fig. 8 is an enlarged detail of a portion of the, in Fig. 6.

Referring to the drawings, 1 designatesa table or frame base, on the top of which are mounted two standards 2 and 3, in the present instance. in diagonally spaced relation with respect toth'e table. The upper ends of the standards 2, 3 form bearing heads in Specification of Letters Patent.

a part of this specifica-' table and carries tendedto have quarter pawl and ratchet means shown ARTICLE POLISHING OR GRINDING MACHINE.

Patented May as, 1918,,

Serial No. 167,072 7 which horizontal shafts 4 and' dare respectively mounted. Butiing or polishing wheels 6 and 7 are mounted on the inner ends ofthe respective shafts 4:, 5 to turn therewith, while the outer ends of said shafts have on, respectively, and belted or otherwise pulleys 8 and 9 mounted thereconnected to a suitable source of power The peripheries of the wheels 6 and 7, in the present instance, section. It will be that the character of said wheels and the shape of theperipheries thereof may be changed to suit the conditions of use. If the machine is to be used for grinding instead of polishing or bufling purposes the wheels 6 and 7 may be made of carborundum or other materials suitable for the purpose. The wheel 6, in the present instance, is employed as the rough polishing wheel and the wheel 7 is employed to impart the finishing polish to the articles acted on.

The table 1 is provided between the standards 2 and 3 with a vertical bearing 10 in which a vertical shaft 11 is mounted for rotary andyielding axial movements. lower end of this shaft projects below the a ratchet-wheel 12 and the upper. end of the shaftprojects above the standard and carries a rotary head or disk L13, from which a plurality of work carrying arms 14: (in the present instance, four The support the shaft in normal position with The shaft 11 is inturning movements intermittently imparted thereto and for this purpose a bearing arm 17 projects from the under side of the table 1 below the ratchetwheel 12 and carries a shaft 18 in axial register with the lower end of the shaft 11. Two crank-arms 19 and 20 are carried by opposite ends of the shaft 18, the arm 20 respect to the bearing.

being disposed adjacent to the under side of the wheel '12 and carrying a pawl 21 in 150-: sition to successively engage within each of a set of four recesses 22 provided in equi distantly spaced relation in the lower ripheralfedge portion of the wheel 12.

spring finger 23 is fixed to the arm 2Q and acts on the pawl 21 to cause it to yieldingly bear against the registering edge portion of the ratchet wheel.

The arm 19 is comiected by a bar 2% to a crank-arm 25-, which is fired to the lower end End of avertical shaft 26, thatgprojects upward through the table 1, being mounted in a suitable bearing 2'? provided therefor.

In order that the arm 19 may have only a quarter revolution imparted theretoat each revolution of the crankrarm. 25, the bar 2% is provided with a longitudinally extending slot 28 for receiving the connecting pin or bolt 29 on the arm 19, thereby enabling the arm 19 to remain stationary during portions of" ried by the shaft 32 and projects partially through an opening 3% provided therefor in the table 1. This pulley may be belted to any. suitable source of power.

A pair of parallel arms 35, 35 fixedly rise from the table 1 adjacent to the shaft 26 and cooperate to form a vertical guide or slideway for a slide 36. A plate 37 connects and is secured to the front side 35, closing the space therebetween for a portion of the length of'said bars and a work holding box or magazine 38 is fixed to and projects from the opposite side of said guide bars. clines outward from the bars 35 so that work pieces A in said magazine will feed by gravity toward and into the space between the bars 35, being prevented by the plate 37' from passing entirelythrough the space between the barsfl When the slide 36 is lowered its upper end is disposed adjacent to the lower edge of the magazine 38 so that upon each raising movement of the slide a work piece will be carried upward thereby between the guide bars 35 and deposited over the top edge of the plate 37 into a trough 39 provided therefor, said trough, in the present instance, being integral with the top edge of the plate 37 and horizontally disposed. The upper end of the slide 36 is dished, as shownet 36 to facilitate a raising of a work piece thereby, saiddished portion being inclined toward the plate 37 so that the work piece automatically passes down over the top of the plate and into the trough 39 when raised'a sufficient height for such purpose. The trough 39 is radially disposed with respect to the turn-table 13 and is in position for one of the arms 14 on a said table to longitudinally register therewith each time the table is at rest, thereby enabling a work piece A, which is of tubular form, such for instance as afountain pen cap or barrel, to be moved longitudinally from the trough 39 and onto the registering more? with a drive-worm 31 onof the guide bars The bottom of thewmagazine 38 1n end of an arm 14.- with the arm endloosely entering the same, so that the, work piece is carried by the arm during portion of its revolution and until subsequently released 5 partreciprocatory movements to the slide. A

bell-orank lever 42 is fulcrumed to a bracket .43 on the table 1 in advance of the guide-bars35 and has its horizontally pr0- ecting arm connected by a link is to the rocker-arm a0 and its' vertically disposed arm extending above the trough 39 and extending over and downward therein for movements lengthwise within the trough when the lever is rocked. A spring 45 normally retains the lever e2 in position for its upper hooked end to stand at the outer end of the trough39 so that a movement of the lever from normal position will cause its hooked end to engage the outer end of a work piece disposed in the trough and force said work piece forward onto a registering turntable arm 14. The shaft 26 is disposed adjacent to the lever 42 and carries a camwheel 46 at its upper end in peripheral engagement with a lug 47 on the vertically disposed arm of the lever 42, whereby a turning of saidcam-wheel will impart a work feeding stroke to the lever 42 at each operating stroke of the pawl 21.

An abrasive or polishing material apply- I 111g means is associated with each polishing or bufhng wheel (5, 7 and comprises a rockerarm 48, which pivotally rises from a bracket 49 on the table 1 at the outer side of the re spective polishing wheel, and this arm is provided at its upper end with a head 50, in which a holder 51 for a cake of abrasive material is mounted for reciprocatory movements in radial relation to the associated wheel. The rockenarm d8 has swinging movements toward and away from the periphery of the wheel to place the outer end of the abrasive cake 52 into and out of contact with the wheel periphery. The outward movements of the arm e8 with respect to the wheel are limited, in the present instance, by a strap 53, which connects a laterally projecting pin 5% on said arm to the bearing 10. The means" for imparting in.- ward movements to the rocker-arm 48 will be hereinafter described.

A shaft 55 is rotatably mounted in one side'of the head 50 and carries a ratchet- Wheel 56 at its outer end and has its inner end portion threaded through an arm 57 projecting laterally from the forward end portion of the holder 51, avhereby turning movements of the shaft 55 impart longitudinal adjusting movements to said holder.

A rocker-arm 58 is pivoted at its lower end to a sideof the head 50, as at 59, and has "its upper. end connected to one end of a draft-part0, which projects horizontally from the rocker-arm 58 across one side of the turn-table 13 and has a notch 61 in an ward-longitudinal movement to such bar 15 arm 58, the engaged pin automatically disand: an inward rocking movement'tothe engaging the notch in the bar at a predetermined point in a revolution of the pin, as is apparent by reference to Fig. 1.

The other abrasive material carrying means, or that associated. with the wheel 7,. is the same in construction as that above described and'has itsdraft-bar 60? notched, as at 61*, and engaging theTespective pine 62 at the opposite side of the turn-table axis to'the point of engagement of said pins with the bar 60. The diametrically opposed pins 62 are intended to engage the notches V in the respective draft-bars, at the same time and to impart simultaneous movements in opposite directions to said bars as the turntable is intermittently rotated. A coiled contractile spring 63 connects'the two draftbars in a manner as shown to resist theinward arm rocking movements thereof and to return them to normal positionsafter the draft-bars have been released by the respective pins 62.

The arm 58 of each abrasive carrying .means has a pin or screw 6% projectingtherefrom adjacent to its pivot 1nto a registering slot 65 in the adjacentsideof the head 50, and this pin and slot operate to limit the rocking movements of the arm 58 I with respect to the head by which it is carried. When the arm 58has been inwardly rocked a suflicient extent to bring the pin 64 into contact with the inner end wall of the slot 65 the rocker-arm 48 is then caused to swing inward during the continiued inward rocking movement of the arm 58 to place the inner end of the abrasive cake 52 into momentary contact with the periphery of the associated abrading wheel. The arm 58 carries a spring pawl 66 at its outer side in position to engage the teeth of the ratchet-wheel 56 and impart a normal turning movement to said wheel during the outward swinging movement of the arm 58 to normal position relative to .the arm :18. The normal-turning of the ratchetwheel 56 at each return movement 'of the arms 48 and 58 to normal position, after a grinding operation, causes a corresponding turning of the shaft 55 and a. slight ad- 7 part a slight inward vancing of the: holder 51 and abrasive cake 52 ;to com 'ensate for the. wear on the abrasivesca e by reason offthe contact of the 'abradingwheel therewith. A spring finger 67 issecured atone end to a side of the rocker-arm head '50 and extends atits other end over the cake 52 and yieldingly bearsthei'eagainst to retain it in the holder 51 and also to retain the holder in' sliding engagement with the head 50. I

When'each arm 14:,has turned past the- 69 of a delivery chute .70 by means of which the work piece is directed T to any suitable point of discharge. "The wheel 68 is carriedby a shaft 71, that is mounted in a bearing bracket 72, rising, in the present instance, from the base portion of the bearing-standard 3. The shaft 71 also carries a pulley 73, that is belted-t0, any suitable source of power. 1

In the operation of my machine, work pieces A are successively delivered to the trough 39 from the magazine 38 by the slide 36 andare delivered in the same order from said trough to the arms 14: as they succes- .sively move into longitudinal register therewith, such delivery of the work pieces to the arms being efi'ected by the work feeding arm 42. Each intermittent partial turning movement of the turn-table 13 places one arm 14 in work receiving register with the trough 39 and two diametrically opposed arms 14,

each of which carries a work piece, in position for the work pieces thereon to have polishing engagement one with the initial polishing wheel 6 and the other with the final polishing wheel 7. As the successive arms 14 pass by the delivery wheel 68, during each intermittent movement of the wheel, the work pieceon such arm is frictionally engaged by the periphery of said wheel and forced outward from engagement with the arm and into the receiving mouth of the delivery chute 70. Each intermittent rotary movement of the turn-table 13 also moves the respective draft-bars 60 and 60 to place the cakes, of abrasive material 52 into and out of engagement with the peripheries of the respective wheels 6, 7 and at the same time the screw-shifts 55 are turned to imadjusting movement-to the cake-holders 51.

It is evident that I have provided a simple and efiicient mechanism for automatically feedingzwork pieces in successive order to different arms or carrying parts of a revolving member, that these work pieces are successively acted on by diii'erent abrading members to impart initial and final polishing operationsthereto and that a work piece after being finally cliched is delivered 'ltrcm the carryingmamer to any suitable point,

thus providing. almachine for rapidly and economically 1 pollshing cylindrlcal ob ects, such for mstanceas fountain pen caps or for feedmg cylindrical work pieces into rotatable carryingposition on each arm at a predetermined point in a revolution thereof, means arms and polishing the same at a predetermined point in a revolution thereof, and means for delivering a polished work piece from each arm at a predetermined point in a revolution thereoi.

2. In a machine of the class described, a revoluble arm, means operable to impartin 'termittent revoluble movements thereto,

means automatically operable to deliver a workpiece to carrying position on said arm at a predetermined point in a revolution thereof, the work piece being rotated on the arm when carried thereby, and means operable to act on the work piece at a predetermined-point in a movement of said arm to both rotate the work piece on the arm and to abradethe same.

' 3. In a machine of the class described, a revoluble arm, means operable to impart step, by step revoluble-movements to said arm, means automatically operable to deliver a work piece to carrying position on said arm ata predetermined point in its movement, the work piece being carried by the arm for rotary movements thereon, and separate means both operable on the carried work piece at difi'erent points in a revolution of the arm to rotate the work piece on the arm and to abrade the same.

t. In a machine of the class described, rotatable means having a projecting arm means for imparting intermittent rotary movements to said first means, means "for feeding a work piece onto said arm for rotary movements thereon when the arm is predetermined pomt in a revolution thereof, and means for acting on each work piece at a predetermined point in its revolution with its carrying arm to rotate thevwork piece on the arm and to abrade the same.

5. in a machine of the class described, rotatablemeans having a plurality of profor, rotating the work pieces onlthe nears-re jecting arms, means for imparting intermittent rotary movements tosaid first means,

means torieeding a" workpiece onto each arm tor rotary movements thereon at a predetermined'point in a revolution of the arm,

and separate means torsuccessively acting on' each work piece at difierent predetere mined points in a revolution of the arm carrying the same to rotate'the work pieceon the arm and to abrade the work piece,

'6. l'n'a machine of the class described, a work holding magazine,ja revoluble arm, and mechanism operable to periodically move said arm into work receiving relation to said magazine and to feed ahollow work piece from said magazine onto said arm when in work receiving position for rotarymov-ements thereon.

7. in a machine of the class described, revoluble work carrying means, a workholding magazine at one side ofsaid means, and mechanism operable to intermittently rotate said means and to feed a work piece from the magazine into carrying position on said means at each period of rest of said means, said mechanism having an oscillating work feed arm.

8. in a machine of the class described, revoluble work carrying means,a Work holding magazine havinga trough part, a member operable 'to successively deliver work pieces to said trough from said magazine, a second member operable to move work pieces from said trough into work carrying position on said. means, and mechanism operable to impart intermittent rotarym0ve ments to said first means and to periodically operate each of said members.

' 9. in a machine of the class described, a work carrying magazine, means revoluble .with respect to said magazine and having a plurality of work carrying arms, mechanism automatically operable to intermittently move said revoluble means to successively move the arms thereof into work receiving relation to said magazine and to feed a work piece from the magazine into carrying position on each arm when in work receiving position, and means for acting on work pieces carried by said first means to abrade the same.

10. in a machine of the class described, revoluble work carrying means, a work holding magazine at one side of said means, mechanism operable to intermittently rotate said means and to feed a work piece from the magazine into carrying position on said means at each period of rest of said means, and means for acting onwork pieces carried by said first means to abrade the same.

11. in a machine of the class described, revoluble work carrying means, a work holding magazine-having a trough part, a member operable to successively deliver work niecm to said trough from said magazine, a

5. ments to said first means and to periodically l is operate each of said means, and means for acting on work pieces carried by said first means'to abrade the same. l

12. In a machine of the class-described,'a revoluble arm, means operable to impart intermittent revoluble movements to said arm, means automatically operable to feed a work piece in carrying position on said arm at a predetermined point in a revolution thereof, a set of abrading wheels for successively acting on a work piece carried by said arm at different points in a revolution thereof, and means associated with each abrading wheel and periodically operable to apply an abrading material thereto.

13. In a machinegof the class described, a turn-table havirigia plurality of work carrying arms projecting therefrom and having a plurality of pins projecting from one side thereof, an abrading wheel for acting on. a work piece carried by each arm at a predeterminedpoint in a revolution of the arm, and means periodically operable by the pins on' said turn-table to apply an abrading-material to said wheel.

. 14:. In a machine of the class described, a

turn-table havdng a plurality of Work carrying arms projecting therefrom and havmg a plurality of pins projecting from one side thereof, an abrading wheel for acting on a work piece carried by each arm ata predetermined point in a revolution of the arm, and means periodically operable by the pins on said turn-table to apply an abrading materialto said wheel, and to periodically adjust said material with respect to the wheel.

15. In a machine of the class described, work carrying means, a work holding maga zine having a trough part, a member operable to deliver work pieces to said trough from said magazine, a second member operable to move work pieces from said trough into work carrying position on said means,

and mechanism operable to periodically operate each ofsaid members.

16. In a machine of the class described, work carrying means, a work holding maga- Zine having a trough part, a slide operable rotatable member having a revoluble Work carrying part, an abrading wheel for acting on a work piece carried by said member at a predetermined point in a revolution thereof, an abrading material carrying means movable into and out of operative relation to said wheel, a link projecting from said means to said member and normally standing in one position, said link and member having parts which periodically interengage during a rotation of the member to impart longitudinal movement to said link from normal position and'to impart predetermined movements to said means.

18. In a machine of the class described, a rotatable work carrying table having a pin projecting therefrom for revoluble movements therewith, an abrading-wheel for acting on a work piece carried by said table at a predetermined point in a revolution thereof, abrading material carrying means mounted for oscillatory movements relative to said wheel, a link extending from said means and having a notch which is periodically engaged by said table-pin at a predetermined point in a revolution thereof whereby predetermined movement is imparted to said link and means with respect to said wheel, and means normally maintaining said link and first means in one position of their movement. i

19. In a machine of the class described, a rotatable work carrying table having a pin projecting therefrom for revoluble movements therewith, an abrading-wheel for .member carried by said arm, a lever connected to said arm for limited rocking movements relative thereto, a link extending from said lever and adapted to be periodically engaged and moved by said'tablepin to impart predetermined rocking movements to both said lever and arm, and means operated by relative rocking movements of said lever and arm to adjust said member with respect to said arm. l

20. In a machine of the class described, a revoluble work carrying arm,;ineans for introducing a work piece in carrying position on said arm, means for acting on the work piece at a predetermined point in its movement with the arm, and a delivery wheel operable to act on said work piece at a predetermined point in its movement with the arm to discharge it from the arm.

In testimony whereof I have hereunto signed my name to this specification.

FRANK H. MOONEY. 

